Quote:
Originally Posted by Fast_Freddy
BTW I installed a K&N filter today and was very disappointed to see how little surface area the filter has. I don't remember previous K&N filters having so much excess poly clogging the filter media around the perimeter. I'd estimate that the K&N has about 1/2 the filter surface area of the oem Denso. In order to flow better than oem the K&N has to utilize a much coarser filter media, which it obviously does. I just hope it's worth all the extra dirt in my engine for the 5whp peak hp gain.
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That's why I like Green Filters. They have much more filter area than K&N and are better quality overall. BMC Filters are better than K&N too.
BTW, I just noticed these filters are also used for several other Toyota engines, not Subaru engines. Yet another part that's Toyota based. :P